Putter head



FIG. 1 is a front, right and top isometric view of putter head showing my new design;

FIG. 2 is a plan view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a rear elevational view thereof; and,

FIG. 5 is a left elevational view thereof. 

The ornamental design for a putter head, as shown and described. 